Up for sale is the Acid Rain Technology Maestro, a 6-channel clocked modulation source that's one of the most playable LFO/automation modules in Eurorack. Think DAW-style automation lanes you can perform live.

Each channel gives you ramp, triangle, square and random shapes with smoothing (sine/smoothed random), triplet and "slow" modes, and unipolar (0–5V) or bipolar (±5V) output. Everything stays locked to the internal or an external clock, from 1/32 notes up to 32 bars, so all six outputs stay phase-aligned even when you're switching things on the fly.

Highlights:

  • Per-channel mute buttons, great for dropping modulation in and out of a patch as a performance move
  • Chain mode to sequence different waveforms into evolving CV streams
  • One-shot mode with a trigger input per channel, so any channel becomes a triggered envelope/CV generator
  • Save/recall full module or per-channel states (14 slots, microSD)
  • Clock and reset in/out

Specs: 20HP, 25mm deep, 65mA +12V / 18mA -12V

Condition: Excellent, fully tested and working with no rack rash. I ended up with two Maestros and only need one, so this one's looking for a new rack.

Includes: Power cable, microSD card, and knurlies (rack screws).

Ships well packed from Philadelphia. Questions welcome!


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Listed18 hours ago
ConditionExcellent (Used)
Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.Learn more
Brand
Model
  • Maestro
Finish
  • Black
Categories
Year
  • 2020

Product safety information may be available here.

Great Googly Moogily!

bala cywyd, PA, United States
Joined Reverb:2025

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